Wrench



J. R. MITCHELL WRENCH.'

APPLICATION FILED FEB. 2, 1921. 1,401,484, Patented D60- 27, 1921.

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UNITED, STATES PATENT OFFICE.

JOHN R. MITCHELL, OF HTLLTOP, WEST VIRGINI A, ASSIGNOR 0F DIME-HALF TO WILEY B. JOHNSON, 0F CISMONT, VIRGINIA.

warmest.

To all whom it may concern:

Be it known that I, JorIN R. MITCHELL, a citizen of the United States, residing at Hilltop, in the'county of Fayette and State of \Vcst Virginia, haveinvented a new and useful Wrench, of which the following is a specification. n

The device forming the subject .matter of this application is of the pipe wrench type. The invention aims to provide a Wrench in which the complications of a Stillson wrench. are absent, the tool being adapted to withstand hard and long con tinued use, without getting out of order. The invention aims to provide novel means for adjusting the movable jaw to accommodate articles of different sizes and shapes, to provide novel means whereby one fixed jaw, carried by the wrench, may be substituted for another fixed jaw, likewise carried by the wrench, and to provide novel means whereby a fulcrum for the wrenchmay be afforded.

It is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the invention appertains.

I do not bind myself to the specific form shown in the drawings and hereinafter described, since, within the scope of 'what is claimed, a. mechanic: may work changes, without departing from the spirit of the inventi on. a

In the accompanyingdrawings:-

Figure 1 shows in side elevation, a wrench constructed in accordance with the invention, parts being broken away, Fig. 2 is an elevation wherein the wrench is viewed at'right angles to the showing ofFig. 1.

i The wrench forming the subject matter of this application includes a shank denoted by the numeral 1.. Although the shank of the wrench may be made in any desired way, it may be desirable to form the shank from a single piece of metal, disposed in U-form, as shown in Fig. 2, the shankembodying spaced arms 2. The side portions of the shank are brought into contact, as shown at 3, to the rear of the arms. This construction increases the strei'igth of the shank. The side portions of the shank diverge from their place 3 of contact, toward the extremity of the shank, as denoted by the numeral 4:, the

end of the shank thus being enlarged, so

Specification of Letters latent. Patented D c 27 1921; Application filed Febrhary a, 1921. Serial no. 441,839.

as to be gripped without difliculty in the hand of the workman.

The arms 2 are provided with a plurality of seatsornotches 5, spaced apart lengthwise of the wrench. A fixed jaw 6is located between the arms 2 at the extremity of the shank 1. The jaw 6 is provided with a curved toothed surface 7. The jaw 6 is held in place,preferably, by a hook bolt 8, passing through the arms 2 and the aw,

one member 9 of the hook bolt carrying a nut 10 engaging one arm 2, the other member 11 of the hook bolt preferably being without a nut. The bolt forms a convenient and strong means for holding the jaw 6 on the shank or body portion of the wrench.

A movable jaw 12, of curved form, is provided, the jaw having, in its concavity, teeth 14;. adapted to cooperate with the teeth 7 of the jaw 6. The jaw 12 embodies a reduced stem 15, received between the arms 2 and having a plurality of openings 16, as shown in Fig. 1. In any of the openings 16, and in any of the seats 6, a pivot element 17 is mounted. It may be desirable to use a cotter pin in the formation of the pivot element 17, since a cotter pin can be shifted readily from one of the openings 1G to another. The construction of the device is such that the jaw 12 is pivotally mounted, so as to cooperate with the aw 6 .in gripping an object, it being possible to shift the pivot element 17 both on the stem 15 of the jaw 12, and in the seats 5, in order to secure an adjustment of the wrench.

The jaw 6 may not always conform to the work in hand, and then recourse is had to a jaw 18, having teeth 19 at one end. The jaw 19 is provided with openings 20, adapted to receive the hook bolt 8, when the jaw 18 replaces the jaw 6. When the jaw 18 is not in use, in connection with the jaw 12, the jaw 18 is not a useless element, but is mounted between the arms 2, to the rear of the jaw 12, the jaw 18 projecting beyond the edge of the shank 1, as shown in Fig. 1, and being held in place by a securing device 21, such as a bolt. When the jaw 18 is located as shown in Fig. 1, the j aw forms a fulcrum on which the wrench may be supported while the jaw 6 and the jaw 12 are in use. hen the jaws 1S and 6 are interchanged, then the jaw 6 becomes the fulcrum.

his to be observed that two jaws are carried by the wrench, one jaw being held in reserve but being always accessible. 7 The wrench, considered generally, is simple in construction, and renders unnecessary, the repairs and adjustments so often called for in connection with a pipe wrench of the well known Stillson type, in which a nut is used as an adjusting means.

Having thus described the invention, what is claimed is V 1. A wrench comprising a shank having arms provided with seats; a fixed jaw located between the arms; means for holding the fixed jaw releasably between the arms; a movable jaw located between the arms and cooperating with the fixed jaw, the movable jaw having a plurality of openings; and a pivot element shiftable from opening to opening and from seat to seat.

2. A wrench comprising a shank; a movable jaw pivoted to the shank; fixed jaws on the shank and located on opposite sides of the movable jaw, one fixed jaw cooperating with the movable jaw, and the other fixed jaw forming a fulcrum for the wrench; and means for securing the fixed jaws releasably to the shank, thereby to provide for an interchange of the jaws.

In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

JOHN R. MITCHELL.

Witnesses:

IVY E; SIMPSON, MASON B. LAWTON- 

